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Pretreatment process of zeolite molecular sieve for synthesis of hydroxypropyl methacrylate

A technology of hydroxypropyl methacrylate and zeolite molecular sieve, which is applied in the direction of molecular sieve catalyst, carboxylate preparation, organic compound preparation, etc., can solve the problems affecting the synthesis effect, achieve dust and impurity removal, facilitate synthesis, improve The effect of catalytic synthesis efficiency

Pending Publication Date: 2020-07-28
CHIZHOU FANGDA SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present in this new type of material helps improve its effectiveness by removing unwanted substances from it's surface. This makes it easier for other chemical reactions like polymerization or cross-linking processes on them more efficiently.

Problems solved by technology

This patented technical problem addressed by this patents relating to improving the quality control (QC) performance of certain chemical reactions involving specific types of materials such as epoxies or polyurethanes during production processes.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: a kind of pretreatment process of zeolite molecular sieve for the synthesis of hydroxypropyl methacrylate comprises the following steps:

[0020] S1. Calcination treatment: preheat the zeolite molecular sieve in a calciner at 350-400°C for 0.5h, and then place it in a calciner at 700-800°C for 1.5h;

[0021] S2, alkalization treatment: place the calcined zeolite molecular sieve in sodium hydroxide solution, stir for 200min, and filter;

[0022] S3. Modification treatment: preparing the reaction mixture according to a certain ratio, immersing the zeolite molecular sieve in S2 in the reaction mixture solution for microwave treatment, keeping the temperature of the reaction mixture solution at 80-90°C, and the reaction time is 4h;

[0023] S4. Filtration treatment: filter and separate the zeolite molecular sieve and the reaction mixture solution in S3, and recover the separated solution;

[0024] S5. Washing treatment: immerse the zeolite molecular sieve in ...

Embodiment 2

[0031] Embodiment 2: a kind of pretreatment process of zeolite molecular sieve for the synthesis of hydroxypropyl methacrylate comprises the following steps:

[0032] S1. Calcination treatment: preheat the zeolite molecular sieve in a calciner at 350-400°C for 1 hour, and then place it in a calciner at 700-800°C for 2 hours;

[0033] S2, alkalization treatment: place the calcined zeolite molecular sieve in sodium hydroxide solution, stir for 25min, and filter;

[0034] S3. Modification treatment: prepare the reaction mixture according to a certain ratio, immerse the zeolite molecular sieve in S2 in the reaction mixture solution to carry out microwave treatment, keep the temperature of the reaction mixture solution at 80-90°C, and the reaction time is 4.5h;

[0035] S4. Filtration treatment: filter and separate the zeolite molecular sieve and the reaction mixture solution in S3, and recover the separated solution;

[0036] S5. Washing treatment: immerse the zeolite molecular s...

Embodiment 3

[0043] Embodiment 3: a kind of pretreatment process of zeolite molecular sieve for synthetic hydroxypropyl methacrylate comprises the following steps:

[0044] S1. Calcination treatment: preheat the zeolite molecular sieve in a calciner at 350-400°C for 0.5-1h, and then place it in a calciner at 700-800°C for 2h;

[0045] S2, alkalization treatment: place the calcined zeolite molecular sieve in sodium hydroxide solution, stir for 30min, and filter;

[0046] S3. Modification treatment: preparing the reaction mixture according to a certain ratio, immersing the zeolite molecular sieve in S2 in the reaction mixture solution for microwave treatment, keeping the temperature of the reaction mixture solution at 80-90°C, and the reaction time is 5h;

[0047] S4. Filtration treatment: filter and separate the zeolite molecular sieve and the reaction mixture solution in S3, and recover the separated solution;

[0048] S5. Washing treatment: immerse the zeolite molecular sieve in S4 in cl...

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Abstract

The invention relates to the related field of organic matter synthesis, and particularly discloses a pretreatment process of a zeolite molecular sieve for synthesis of hydroxypropyl methacrylate. Thepretreatment process comprises the following steps: S1, calcining treatment; S2, alkalization treatment; S3, modification treatment; S4, filtration treatment; S5, water washing treatment; and S6, drying treatment. According to the pretreated zeolite molecular sieve, attached dust and impurities are effectively removed, so the pretreated zeolite molecular sieve is improved in the efficiency of catalytic synthesis of hydroxypropyl methacrylate, and convenience is brought to synthesis.

Description

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Claims

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Application Information

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Owner CHIZHOU FANGDA SCI & TECH CO LTD
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